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A kind of sound film material of loudspeaker and its preparation method and application

A loudspeaker and sound film technology, applied in the field of loudspeakers, can solve the problems of reducing mechanical properties, affecting the acoustic properties of the sound film, poor waterproof and moisture-proof performance of the tweeter sound film, etc., to meet the requirements of use stability, excellent waterproof and moisture-proof performance, excellent resistance The effect of thermal shock

Active Publication Date: 2022-02-11
GUOGUANG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the waterproof and moisture-proof performance of the treble sound film is poor, and it cannot adapt to the application in high humidity environment
[0008] Among the existing sound film materials, the treble sound film usually uses silk, tetoron or textile cotton as the base material. However, the above-mentioned materials are hydrophilic and will absorb water and moisture in an environment with high humidity. On the one hand, it reduces Its mechanical properties, on the one hand, will also affect the acoustic characteristics of the speaker, so it is necessary to improve the waterproof and moisture-proof properties of the sound film material
However, the sound film treated with moisture-proof treatment in the prior art cannot achieve the ideal waterproof and moisture-proof performance, and will also affect the acoustic properties of the sound film

Method used

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  • A kind of sound film material of loudspeaker and its preparation method and application
  • A kind of sound film material of loudspeaker and its preparation method and application
  • A kind of sound film material of loudspeaker and its preparation method and application

Examples

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Effect test

Embodiment 1

[0064] A kind of sound membrane material, comprises base material (silk cloth, weight is 85g / m 2 ) and the first moisture-proof layer and the second moisture-proof layer arranged on both surfaces of the base material, the schematic diagram of which is shown in figure 1 As shown, wherein, 10-substrate, 11-the first moisture-proof layer, 12-the second moisture-proof layer, the thickness of the first moisture-proof layer is 30 μm, and the thickness of the second moisture-proof layer is 10 μm; the material of the first moisture-proof layer includes: 48 parts by weight of acrylic polymer, 48 parts by weight of styrene-butadiene copolymer and 4 parts by weight of fluororesin, the material of the second moisture-proof layer includes: 49.5 parts by weight of acrylic polymer, styrene-butadiene copolymer 49.5 parts by weight and 1 part by weight of fluororesin; the preparation method is as follows:

[0065] (1) Mix 48 parts by weight of acrylic emulsion, 48 parts by weight of styrene-...

Embodiment 2

[0068] A kind of sound membrane material, comprises base material (silk cloth, weight is 85g / m 2 ) and the first moisture-proof layer and the second moisture-proof layer arranged on both surfaces of the base material, the schematic diagram of which is shown in figure 2 As shown, wherein, 10-substrate, 11-the first moisture-proof layer, 12-the second moisture-proof layer, the thickness of the first moisture-proof layer is 20 μm, and the thickness of the second moisture-proof layer is 20 μm; the material of the first moisture-proof layer includes: 48 parts by weight of acrylic polymer, 48 parts by weight of styrene-butadiene copolymer and 4 parts by weight of fluororesin, the material of the second moisture-proof layer includes: 49.5 parts by weight of acrylic polymer, styrene-butadiene copolymer 49.5 parts by weight and 1 part by weight of fluororesin; the preparation method is as follows:

[0069] (1) Mix 48 parts by weight of acrylic emulsion, 48 parts by weight of styrene-...

Embodiment 3

[0072] A kind of sound membrane material, comprises base material (silk cloth, weight is 85g / m 2 ) and the first moisture-proof layer and the second moisture-proof layer arranged on both surfaces of the base material, the schematic diagram of which is shown in figure 2 As shown, the thickness of the first moisture-proof layer is 20 μm, and the thickness of the second moisture-proof layer is 20 μm; the material of the first moisture-proof layer includes: 48 parts by weight of acrylic polymer, 47 parts by weight of styrene-butadiene copolymer and fluorine 5 parts by weight of resin, the material of the second moisture-proof layer includes: 50 parts by weight of acrylic polymer, 49 parts by weight of styrene-butadiene copolymer and 1 part by weight of fluororesin; the preparation method is as follows:

[0073] (1) Mix 48 parts by weight of acrylic emulsion, 47 parts by weight of styrene-butadiene latex and 5 parts by weight of water-based fluororesin to obtain the first moisture...

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Abstract

The invention provides a sound film material of a loudspeaker and its preparation method and application. The sound film material includes a base material, and a first moisture-proof layer and a second moisture-proof layer respectively arranged on two surfaces of the base material; The materials of the first moisture-proof layer and the second moisture-proof layer each independently include a combination of acrylic polymer, styrene-butadiene copolymer and fluororesin. The sound film material forms a dense coating on the surface through the mutual cooperation among the three components of the moisture-proof layer, which not only provides waterproof and moisture-proof performance, but also increases the damping performance. The static contact angle of the sound film material is 93.3° to 110°, and has good water repellency. The sound film assembly comprising the sound film material has excellent cold and heat shock resistance and waterproof and moisture-proof performance, and maintains good resistance in hot and humid environments. Acoustic stability, which can fully meet the stability requirements of the speaker in harsh environments such as humid heat and alternating cold and heat.

Description

technical field [0001] The invention belongs to the technical field of loudspeakers, and in particular relates to a sound film material of a loudspeaker and a preparation method and application thereof. Background technique [0002] The loudspeaker is an electro-acoustic transducer, which is mainly divided into three parts according to the function: the vibration part, the magnetic circuit part and the suspension part. The sound film is the key part of the vibration part, also known as the diaphragm. The sound film is mainly bonded to the voice coil, and the air in the cavity is compressed under the drive of the voice coil to produce sound. Therefore, the sound film can directly affect the frequency response and frequency response of the speaker. Vocal nature. The material properties of the sound film mainly affect the inherent sound color of the speaker. The material properties include the characteristics of the material itself, the mixing ratio, additives, preparation tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R31/00H04R7/04D06M15/41D06M15/263D06M15/693
CPCH04R31/00H04R7/04D06M15/41D06M15/263D06M15/693
Inventor 陈进王世伟
Owner GUOGUANG ELECTRIC